What is the remainder when positive integer x is divided by 5?
(1) x divided by 10 has a remainder of 7.
(2) x divided by 2 has a remainder of 1.
The OA is A .
How can I use statetment (1) to get an answer here? Experts, I would like your help.
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What is the remainder when positive integer x is . . .
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(1) x divided by 10 has a remainder of 7.M7MBA wrote:What is the remainder when positive integer x is divided by 5?
(1) x divided by 10 has a remainder of 7.
(2) x divided by 2 has a remainder of 1.
The OA is A .
How can I use statetment (1) to get an answer here? Experts, I would like your help.
Say x = 10m + 7
x/5 = (10m + 7)/5 = 2m + 1 + 2/5. The reminder = 2. Sufficient.
(2) x divided by 2 has a remainder of 1.
Say x = 2k + 1
If k = 1, then the remainder = 3; however, if k = 2, then the remainder = 0. Not a unique answer. Insufficient.
The correct answer: A
Hope this helps!
-Jay
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